Starter H202 is a cytotoxic agent which can be present in beverages such as instant coffees, inhaled gases and medicines.

Slides:

Advertisements

Similar presentations

Identify and Investigate the role of enzymes.

Advertisements

Exergonic Reactions - some chemical reactions release energy –Happen spontaneously –Ex: HCl + Zn H + ZnCl Endergonic Reactions - some chemical reactions.

Aim: What are enzymes? I. Enzymes (Organic Catalysts) – proteins that change the rate of a chemical reaction (usually speeds it up). A. Characteristics.

2-4 Chemical Reactions and Enzymes

Enzymes. Info on Enzymes Enzymes are necessary for all biochemical reactions Enzymes are proteins that speed up a chemical reaction Enzymes break apart.

Enzymes. Science Fact of the Day: The fungus Cordyceps is able to "mind-control" other insects like ants to climb plants and attach there to become its.

Chemical Reaction A process that changes one set of substances into a new set of sub. Chem rxns can occur too slowly and need help. Catalyst –speeds up.

Enzyme Structure Enzymes are proteins, which are chains of amino acids Enzymes have a folded, 3D shape This shape determines an enzyme’s function ENZYME.

Key words: Denatured, Optimum temperature, PH

Enzymes Worksheet catalyst amino acids different function

Chemical Reactions and Enzymes

Activity 2: Enzymes are specific

CATALYST Tuesday, October 3rd

AND CHEMICAL REACTIONS.

Enzymes: Biological Catalysts

Allosteric Activators

Enzymes: “Helper” Protein molecules

ENZYMES Biological catalysts.

Enzyme Notes Enzymes are ________________ made in the ____________________________, and their monomer is an ____________________________. Enzymes act as.

Enzymes I.N. Headings Vocabulary Important Words

Enzymes: “Helper” Protein molecules

Enzymes are “Bossy” Proteins

Chemical Reactions.

KEY CONCEPT Life depends on chemical reactions.

Lesson 2.4: Chemical Reactions & Enzymes

Use the videos and the notes you have to answer the questions

Sec 2.3 Chemical Reactions and Enzymes

Starter H202 is a cytotoxic agent which can be present in beverages such as instant coffees, inhaled gases and medicines.

ENZYMES HB p. 17.

Starter H202 is a cytotoxic agent which can be present in beverages such as instant coffees, inhaled gases and medicines.

Starter Read pg. 116 and answer question 4 on your worksheet.

Structure and action of enzymes

Enzymes Headings Vocabulary Important Info

Identify and Investigate the role of enzymes.

Enzyme Foldable What is an Enzyme? Parts of an Enzyme Enzyme Action

Enzymes Biology 12.

Enzyme-Substrate Complex

Why do we study chemical reactions in biology?

The most important protein?

#1 Explain the role of the chloroplast.

Biomolecules Enzymes.

Enzymes Biological catalyst – it speeds up reactions without being permanently changed.

Lesson /8/18 SWBAT identify and model positive and negative feedback loops. Do Now: What is the difference between a positive and a negative feedback.

ENZYMES Unit 1 Biochemistry.

KEY CONCEPT Enzymes are catalysts for chemical reactions in living things.

Enzyme Foldable What is an Enzyme? Parts of an Enzyme Enzyme Action

Involve chemical reactions

Warm-up 9/30/14 Which macromolecule do enzymes fall under?

Enzymes are “Bossy” Proteins

Enzymes Headings Vocabulary Important Info

Chapter 2 The Chemistry of Life.

Action of Enzymes How Enzymes Work

Enzymes Most of the food we eat is complex carbohydrates, proteins and lipids. These must be broken down to be absorbed into the body. The chemical reactions.

Presentation transcript:

Starter H202 is a cytotoxic agent which can be present in beverages such as instant coffees, inhaled gases and medicines.

H2O2 level should be minimized by the action of antioxidant defense enzymes, which is a network of enzymes work together to prevent damages to DNA, proteins and lipids.

Watch the following video https://drive.google.com/drive/folders/0B5xt5_QpG0addGoyd1RDU3pIcFE

The following are the questions you need to answer to investigate enzymes and enzymes actions. 1- General definition of : enzyme, substrate, active site.( You may draw a schematic picture with labels too) 2- What gives the specificity of enzymes. 3- Mechanism of enzyme: Lock and key model vs. inducible fit model. 4- What factors affect the rate (speed) of action of an enzyme? You have three ways to find out the answers: Text - diagram - Video

Think out side the box Go to worksheet #1 in the blog and complete as much as you can. H.W assignements : Worksheet #1 , Worksheet #2( questions 20-23 are not mandatory and will be considered as bonus mark if solved and submitted on A4 paper (# Think out side the box)